New Santa Clara Stadium

Facility DesignDan Boresch

● Services: Engineering & construction

● Founded: 1954

● Employees: ≈ 1,500 (field + office)

● Revenue: $570 million (2012)

● Safety: AGC “Safety Awards ofExcellence” (2011 & 2012)

● Customers: Fortune 100 companies

● Reach: National

Cupertino Electric (CEI) Overview

● Stadium

■ Primary Gear

■ Substations

■ Scoreboards

● Superbowl

■ Event

■ Solution

Outline

NEW SANTA CLARA STADIUM(LEVI’S STADIUM)

Design Parameters

● Maximize Uptime

● Event Considerations

■ 8 Football

■ 12 Other Events

● Longevity

● Budget

● 300 Drawings

● 52 Miles Feeders

● 350 Miles Conduit

● 45 Miles PVC Underground

● 500 Miles Low Voltage Cable

● 1st ALL Exterior LED Stadium*

● 500 Power Panels (12,000 Breakers)

● 17,000 Luminaires

Facts

● Connected = 27MVA

● Diversity = 45%

● Demand = 12MVA

● Single Point Failure when Tie Closed

Just Numbers

Primary Gear

Main A Tie Main B

Secondary Distribution

● Voltage Sag Tolerance 42%

● Power Loss Tolerance 1/4 cycle

Sports Lighting

(648)1500W

Metal Halide

(24)2000W

Hot Restrike

Scoreboards

Two of a Kind

10’4’

Blackout

● Study by Palmer Engineering and Forensics

■ 13.8 kV S&C switch operated as designed but..

■ Improper LT settings

What Really Happened?

Power Sports Lights

Contractor’s Engineering Guide

Budget Simple Schedule

Low-Hanging Fruit

● Second Harmonic Restraint at Mains

■ Blackout Restart Inrush

■ 2 Layer 50 Relay

● VLF-Tested 12 kV Cables

Goose Lite

SERVICE LEVEL

SITE

Hardwired

Images by Schweitzer Engineering Laboratories, Inc.

Basic Load Shed

VAV Air Handlers

1.7MVA Connected

1.0MVA Demanded

+

Manual Shed

300kVA

Escalators

= 600HP

Broadcast

= 300kVA

10.5MVA

11.8MVA

Meter Images by Schneider Electric

Q&A